JPC - Journal of Planar Chromatography - Modern TLC
Volume/Issue:
Volume 21: Issue 5
Planar dielectrochromatography in a vertical chamber
Authors:
Virginia Coman “Babeş-Bolyai” University “Raluca Ripan” Institute for Research in Chemistry Fântânele 30 400294 Cluj-Napoca Romania

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Ştefan Kreibik “Babeş-Bolyai” University “Raluca Ripan” Institute for Research in Chemistry Fântânele 30 400294 Cluj-Napoca Romania

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Mihaela Vlassa “Babeş-Bolyai” University “Raluca Ripan” Institute for Research in Chemistry Fântânele 30 400294 Cluj-Napoca Romania

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Pages:
373–378
Online Publication Date:
22 Oct 2008
Publication Date:
01 Oct 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1556/jpc.21.2008.5.10
Keywords:
Planar dielectrochromatography (PDEC); Vertical dielectrochromatographic chamber (V-PDEC); Electroosmotic flow (EOF); Dielectroosmotic flow (DEOF); Dielectrophoresis (DEP); Interfacial electrohydrodynamic phenomenon (EHD)
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Drawn by capillary forces the developing solvent (mobile phase) migrates through the thin layer (stationary phase) over a defined distance. During this process the sample is separated into fractions. In TLC the flow velocity of solvent is inversely related to the distance migrated by the solvent front. For this reason classical TLC is time-consuming and usually of low chromatographic efficiency. To improve the separation selectivity suitable transverse alternating electric fields have been used to modify the mobile phase front velocity and the migration distance of solutes. In this paper, a vertical chromatographic chamber has been constructed and has been used to study experimentally the principles of planar dielectrochromatography, particularly the increase of the mobile phase front velocity and of the dielectrophoretic force generated at granule level on alumina plates. The equicurrent and countercurrent arrangements of armatures were taken into consideration. Good results were obtained in the countercurrent arrangement, the resolution of solute separation being improved.

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Cover JPC - Journal of Planar Chromatography - Modern TLC
JPC - Journal of Planar Chromatography - Modern TLC
Print ISSN:
0933-4173
Online ISSN:
1789-0993

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Journal of Planar Chromatography - Modern TLC
Language English
Size A4
Year of
Foundation		 1988
Volumes
per Year		 1
Issues
per Year		 6
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0933-4173 (Print)
ISSN 1789-0993 (Online)

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